COMPUTER PROGRAM FOR OPERATING COMPUTER AS VOICE RECOGNITION DEVICE AND SENTENCE CLASSIFICATION DEVICE, COMPUTER PROGRAM FOR OPERATING COMPUTER SO AS TO REALIZE METHOD OF GENERATING HIERARCHIZED LANGUAGE MODEL, AND STORAGE MEDIUM

摘要

PROBLEM TO BE SOLVED: To automatically switch domains to precisely recognize voices while suppressing increase in a calculation cost.;SOLUTION: A voice recognition device realized by a program for operating a computer as a voice recognition device and a sentence classification device uses hierarchized language models and comprises; a general-purpose voice recognition part 220 which uses general-purpose language models in higher hierarchies to perform voice recognition; a topic detection part 222 which detects topics of the recognition result by calculating distances between the recognition result and topic-classified language models in lower hierarchies; a topic storage part 230 for storing selected topics; a topic-classified voice recognition part 226 which uses language models corresponding to stored topics to perform voice recognition; and a selection part 236 which selects one of the recognition result of the general-purpose voice recognition part 220 and that of the topic-classified voice recognition part 226, which has higher reliability.;COPYRIGHT: (C)2004,JPO&NCIPI